/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.rocketmq.store;

/**
 * Clean up page-table on super large disk
 * 清理 超大磁盘的page-table
 */
public interface Swappable {
    /**
     * swap map
     * @param reserveNum 保留的page数量
     * @param forceSwapIntervalMs 强制清理page的间隔时间
     * @param normalSwapIntervalMs 普通清理page的间隔时间
     */
    void swapMap(int reserveNum, long forceSwapIntervalMs, long normalSwapIntervalMs);

    /**
     * clean swapped map 清理已经swap掉的page
     * @param forceCleanSwapIntervalMs
     */
    void cleanSwappedMap(long forceCleanSwapIntervalMs);
}
